Steam generator



Dec. 3, 1946. I J. P. BADENHAUSEN 5TB GBRBRATOR Filed Iarh 9. 1945 2 She ets-Shaet 1 INVENTOR. j JOHN PHILLIPS BADENHAUSEN aw QTQW? ATTORNEY J.VP.VIBADENHIAUSEN 2,412,115- I smut GENERATOR Filed larch 9, 1945 1 2 She'ets-Sheet 2 a .r 7 3 9 3 4 3 4 2 .a 3 .4: 5 2. .4 n a m a. a, 3 7 3 *4! ATTORNEY Patented Dec. 3, 1946 STEAM GENERATOR- John Phillips Badenhausen, Philadelphia, Pa

assignor of one-half to Bayard Badenhausen,

Philadelphia, Pa.

Application March 9, 1945, Serial No. 581,785

It is a further object of the present invention to provide an improved arch construction with air for supporting combustion introduced therethrough.

It is a further object of the present invention to provide apparatus for burning fuel for steam generation which will be adequately protected from the high temperature of the combustion.

of the fuel..

Other objects of the invention will be apparent from the specification and claims.

I'he natureand characteristic features of the invention will be more readily understood from the following description, taken in connection with the accompanying drawings forming part hereof, in which: I

Figure 1 is a vertical transverse sectional view taken approximately on the line of Fig. 2;

Fig. 2 is a vertical central sectional view taken approximately on. the line 2-2 of Fig. 1;

Fig. 3 is an enlarged fragmentary view partly in plan and partly in horizontal section illustrating a preferred construction in accordance with the present invention; and

Fig. 4 is anenlarged fragmentary sectional view taken approximately on the line 4-4 of Fig. 3.

It should, of course, be understood that the description and drawings herein are illustrative merely, and that various modifications and changes may be made in the structure disclosed :without departing from the spirit of the inven- 8 claims. (01. 122 -255) 4 and i3 lower water headers 15 and I6 are providedextending from front to rear and with their longitudinal axes parallel to the axis of the steam and water drum l4. Between the front wall l0 and the rear wall ll an'upwardly extending vertical wall or baflle l'l is provided, preferably extending from the side wall l2 to the side wall I3. The upper ends of the side walls I2 and I3 are preferably connected to the top wall sections I8 and I 9 and a central top wall section 20, covering the drum l4 extends between the top wall sections l8 and I9.

The front wall 10 is preferably provided with a fuel inlet opening 2| for the introduction of fuel in any desired manner. The space to'the rear of the front wall ill, in front of the wall or baflie I! and between the side walls 42 and I3 preferably constitutes a combustion chamber. A grate 22, extending rearwardly from the front wall l0'to the wall or baffle ll, may be provided for retaining a bed of burning fuel at the lower part of the combustion chamber. The grate 22 preferably serves as a. closed hearth and the space below the grate 22 is preferably closed and need not be provided with any air supply. The side walls 12 and it of the combustion chamber are preferably lined with banks of spaced steam generating riser tubes 23 which extend upwardly along the interior of the side walls l2 and I3 from the lower water headers l5 and 16 to the steam and water drum M. A bank of spaced steam generating riser tubes 24 is provided, the tubes 24 extending upwardly from the headers l5 along the interior of the side wall l2, and then substantially horizontally and transversely across to the other side wall l3, then upwardly along'the interior of the wall I3 and beneath the top wall section I! to the steam and water drum H.

A bank of spaced steam generating riser tubes 25 is provided, the tubes 25 extending upwardly -,from the headers is along the interior of the side wall l3 and then substantially horizontally and transversely across to the other side wall l2, then upwardly along the interior of the wall l2 and beneath the top wall section l8 to-the steam and water drum I4.

The substantially horizontal portions of the tubes 24 and 25 serve as supports for an arch 30 illustrated in more detail in Figs. 3 and l. I

The arch 30 preferably consists of a plurality of inverted Y-shaped elements 3| of refractory material. The elements 3| have upwardly extending legs 12 for separating the space therebetween into a plurality of transversely extending compartments 33. The elements 3| are bifurcated .The elements 3| have downwardly extending legs 34 which extend below the horizontal portions of the tubes 24.

The upper faces .of the legs 32 are preferably connected by cover plates 35 of refractory mate rial. The cover plates 35 preferably have horizontal portions 46 for engagement with the upper faces of legs 32 and vertical portions 41 for engagement with the vertical faces of the legs 32 at the top thereof. The alternate horizontal tube portions, such as the horizontal portions of the tubes 25, haverefractory spacer blocks 36 mounted thereon. The blocks 36 have rdownwardly extending portions 31 and horizontally extending, portions 38. The spacer blocks'36 have vertical side faces 36a for engagement with vertical side faces 34a ofthe block elements 3. The refractory spacer blocks 36, when in position, serve to space the elements 3| and retain the same in 'their proper'position without the necessity for any other fastening structure.

Each of the spacer blocks 36 is provided, at the horizontal portion 38 thereof, with openings 39 for the downward delivery of air from thecompartments 33 to the fuel on the grate 22. The number and sizes of the openings 33 may be varied in accordance with the air requirements for the burning of the particular fuel employed, the openings 39 being provided in sumcient numher, and of sufficient size, to provide all the air required for the combustion of the fuel on the grate 22. Air is supplied to thecompartments 33 by air ducts 40.

The mode of operation will, it is thought, be

clear from the foregoing, but it may be noted that the fuel is supplied through the fuel inlet opening 2| and delivered to and distributed on the grate Air is supplied for combustion through the ducts 40 to the compartments 33 and from the compartments 33 downwardly through the openings 39. The air for combustion is thus directed onto the fuel on the grate 22. The fuel is burned on the grate 22 and the burning continues as the hot gases of comsponding lower portion, and refractory block members closing the space between said transverse tube portions, certain of said block members having interior air compartment separating portions and certain of said block members having.

openings in communication with said air compartments for the delivery of air for combustion of the fuel on said bottom wall.

2. In a steam generator, 8. bottom wall, an upper steam and water drum, lower water headers,- banks of steam generating tubes each having a ers, each of said tubes having an upper portion bustion pass around the front of the arch 30 and across the top thereof. The heat released by the combustion is effective for generating steam in the banks of wall tubes 23 and in the tubes of the banks of tubes 24 and 25. The steam rises in the tubes 23, 24 and 25 and is delivered thereby to the steam and water drum I4.

The air moving in the compartments 33 prevents the overheating of the cover plates," as the hot gases of combustion pass thereover. The horizontal sections of the tubes 24 and 25, in addition to their function of generating steam, also support the arch 30, and aid in cooling the arch 30 thereby preventing the same from being overheated.

I claim:

1. In a steam generator, side walls, a closed bottom wall for receiving fuel for combustion, an upper steam and water drum, lower water head ers, banks of steam generating tubes each having a lower portion extending upwardly from one of said headers along a side wall and having a transverse portion extending substantially horizontally said tubes having an upper portion extending upintermediate said drum and said headers, each of wardly and into communication with said. drum,

extending upwardly and into communication with said drum, and refractory blocks closing the space between said transverse tube portions and supported by said transverse tube portions, refractory blocks spaced above said first mentioned blocks, certain of said blocks having wall portions for separating the space between said blocks into a plurality of air compartments, and certain of said blocks having openings for the delivery of air for combustion of the. fuel on said bottom wall.

3; In a steam generator, side walls, a bottomwall, an upper longitudinally extending steam and water drum, spaced lower headers extending parallel to said drum, banks of tubes each having a lower portion extending upwardly from one of said headers along a side wall and having a trans verse portion extending substantially horizontally intermediate said drum and said headers, each of said tubes having an upper portion extending delivery of air for combustion of fuel on the bottom wall.

fuel inlet opening, spaced side walls, a grate at the lower part of said side walls and extending therebetween, an upper steam and water drum, steam generating tubes connected to said drum and each having a transverse portion extending substantially horizontally below said drum and above said grate, and an arch above said grate comprising spaced refractory blocks extending between said side walls and supported by said transverse tube portions, refractory blocks be-. tween said first mentioned blocks and supported by said transverse tube portions, certain of said refractory blocks having wall portions and certain of said refractory blocks having air delivery openings for supplying the air for. burning the fuel on the grate, and refractory blocks connecting said wall portions for providing air compartments in communication with said air delivery openings.

5. In a steam generator, a front wall having-a I fuel inlet opening, spaced side walls, a grate at the lower part of said side walls and extending therebetween, an upper steam and water drum, steam generating tubes connected to said drum and each having a transverse portion extending substantially horizontally below said drum and above said grate, and an arch above said grate comprising spaced refractory blocks in engagement with said transverse tube portions, refrac blocks connecting said wall portions for providing air compartments in communication with said air delivery openings.

6. In a steam generator, a front wall having a fuel inlet opening, spaced side walls, a grate at the lower part of saidside walls and extending therebetween, an upper steam and water drum, steam generating tubes connected to said drum substantially horizontally below said drum and above said grate, and an arch above said grate comprising spaced refractory blocks extending between said side walls and supported by said transverse tube portions, refractory blocks between said first mentioned blocks supported by said transverse tube portions and in engagement with said tube portions and said other blocks, certain of said refractory blocks having vertically disposed wall portions and certain of said refractory blocks having downwardly disposed air v and each having a transverse portion extending and water compartment, and refractory members carried by said transverse tube portions and providing an arch, said refractory members comprising spaced inverted Y-shaped blocks in engagement, with and supported by said transverse tube portions and extending thereabove, spacer blocks between said first mentioned blocks, the upwardly extending portions of said first mentioned blocks constituting vertically disposed wall portions, certain of said blocks having downwardly disposed air delivery openings for supplying air for,

combustion, and refractory blocks connecting the upper ends of said wall portions and providing air compartments in communication with said air delivery openings.

- 8. In a steam generator, a bottom wall,'an upper steam and water compartment, banks of steam generating tubes each having a transverse portion extending substantially horizontally below said steam and water compartment, each of said tubes having an upper portion extending upwardly and in communication with said steam and water compartment, and refractory members carried by said transverse tube portions and providing an arch, said refractory'members comprising spaced inverted Y-shaped blocks in engagement with and supported by said transverse tube portions and extending thereabove, inverted U- shaped blocks between said first mentioned blocks and in engagement with said tube portions and said other blocks, the upwardly extending portions of said first mentioned blocks constituting vertically disposed wall portions, certain of said blocks having downwardly disposed air delivery openings for supplying air for combustion, and refractory blocks connecting the upper. ends of said wall portions and providing air compartments in communication with said air delivery openings. I

JOHN PHILLIPS BADENHAUSEN. 

